Fix IDE editing of decomposed productions

[isc-pbarton]

fixes #643

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 64.28571% with 15 lines in your changes missing coverage. Please review.

Project coverage is 41.20%. Comparing base (cba24b5) to head (00451b8).

Files with missing lines	Patch %	Lines
cls/SourceControl/Git/Production.cls	63.41%	15 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #745      +/-   ##
==========================================
+ Coverage   41.15%   41.20%   +0.04%     
==========================================
  Files          24       24              
  Lines        3188     3206      +18     
==========================================
+ Hits         1312     1321       +9     
- Misses       1876     1885       +9     

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[isc-tleavitt]

There's a more structured way to do this but on further consideration I don't care, this is more readable anyway!